The core just uses whatever the VM under it has for error handling. Clojure is a hosted language and one of the best decisions it made was not to hide the VM it

The core just uses whatever the VM under it has for error handling. Clojure is a hosted language and one of the best decisions it made was not to hide the VM its sitting on (either the JVM, CLR or JS - all have slightly different exception handling). I see it more as a development library and don't ship it to production. There's also cljs-devtools and dirac to enhance the chrome devtools with ClojureScript support. Once you try them you're not going back :)